Recognised as Colour

#BF4057

#BF4057
Red
Dark
Nearest: Indian red

#BF4057 is a red with RGB values 191, 64, 87 and HSL 349°, 50%, 50%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#BF4057#BF4057

HEX#BF4057

RGBrgb(191, 64, 87)

RGB (0–1)0.749, 0.251, 0.3412

RGB percentages74.9%, 25.1%, 34.1%

HSLhsl(349.1, 49.8%, 50%)

HSV / HSBhsv(349.1, 66.5%, 74.9%)

CMYK0%, 66.5%, 54.5%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,533,847

CSS custom property--colour: #BF4057;

Brightness & contrast

Relative luminance0.15431WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.14:1

Contrast with white5.14:1WCAG normal text: AA

Contrast with black4.09:1WCAG normal text: Fail

Greyscale equivalent#5D5D5D

Inverted#40BFA8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F5D57no red cones; affects about 1% of men; ΔE 54.4 from the original

Deuteranopia#7F7754no green cones; the most common form, about 1% of men; ΔE 55.4 from the original

Tritanopia#D02849no blue cones; rare, and affects men and women equally; ΔE 15.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.14:1WCAG large text: AAA

Contrast with black, large text4.09:1WCAG large text: AA

Named colours

Indian red · ΔE 12.6 Brown · ΔE 18 Pale violetred · ΔE 21.6 Light coral · ΔE 22.5 Firebrick · ΔE 24 Crimson · ΔE 26.3

Nearest named CSS colourIndian red (#CD5C5C)ΔE 12.55, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#40BFA8

Analogous#BF4097, #BF6940

Triadic#57BF40, #4057BF

Split complementary#40BF69, #4097BF

Tetradic#96BF40, #40BFA8, #6840BF

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F2D9DD

Lighter +30%#E5B3BC

Lighter +20%#D98C9A

Lighter +10%#CC6679

Darker −10%#993346

Darker −20%#732634

Darker −30%#4C1A23

Darker −40%#260D11

More saturated +25%#DF2043

Less saturated −25%#9F606B

Channel breakdown

R191

G64

B87

Red191 (74.9%)

Green64 (25.1%)

Blue87 (34.1%)

Hue349.13°

Saturation (HSL)49.8%

Lightness50%

Dominant channelRed

Hex per channelR BF · G 40 · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF4057 (chemical formula)

Formula
77,085.696 g/mol
4058 atoms

BF4057 has a molar mass of 77,085.696 g/mol, made up of 4058 atoms across 2 elements: 1 × B, 4057 × F.

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Molar mass

Molar mass77,085.696 g/mol

Total atoms per molecule4058

Distinct elements2

Mass of one molecule1.2800381 × 10^-19 g

Molecules per gram7.8122675 × 10^18

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

B0%

F100%

Boron (B)10.81 g/mol, 0.014%

Fluorine (F × 4057)77,074.886 g/mol, 99.986%

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